ans all and please explain

or Crotonaldehyde has a pk, which is similar to that of acetone (pK, 20). For both of these compounds draw the reactive intermediates which are formed when reacted with a suitable base. With the aid of resonance structures indicate how these intermediates are stabilised. lofon crotonaldehyde (6 marks) Account for the observation that a solution of 1 in CDC), has a broad singlet which integrates to one hydrogen at 15 ppm in its 'H NMR spectrum and that this resonance disappears upon the addition of D-0. the secret acetone (6 marks) Suggest a mechanism for the conversion of 2 into 3. Your answer should include a discussion of the regiochemistry and chemoselectivity of this transformation CHO KOH lub Discuss ANY TWO of the following transformations, providing suitable reagents and giving curly arrow mechanisms in each case. NO